1. Breeding separately: Red parrots are fierce and naturally aggressive. If they are mixed with other gentle fish, they will often attack other fish. If breeders want to avoid this situation, they can choose to breed them separately from other fish.

2. Change the fish tank: Red parrot fish have a strong sense of territory. If they don't have enough space, they will bite other fish. Breeders can try to replace a large fish tank to ensure that they have enough room to move, which can also reduce the situation of fighting.

3, add partition: If the breeder wants to keep the red parrot fish with other fish, he can add a transparent partition in the middle of the fish tank. In this way, they can feel each other's existence, but they can't attack each other. After they get used to the existence of other fish, try to remove the partition.

1. Self-healing: If the injury of parrot fish is not serious, the breeder can choose to let them heal by themselves. Because regular medication also has an impact on their bodies, if the injury is not serious, the breeder only needs to change their water frequently and add some crude salt.

2. Use anti-inflammatory drugs: If the parrot fish are seriously injured, the breeder needs to fish them out for separate breeding, and then take a medicated bath with penicillin, oxytetracycline and potassium permanganate solution. If the injured part is relatively large, it is best to clean it up with medicine alone.